Download macOS High Sierra 10.13.4 Combo Update

The macOS High Sierra 10.13.4 update improves the stability, performance, and security of your Mac, and is recommended for all users.

This update:
• Adds support for Business Chat conversations in Messages in the U.S.
• Adds support for external graphics processors (eGPUs)
• Fixes graphics corruption issues affecting certain apps on iMac Pro
• Allows jumping to the right-most open tab using Command+9 in Safari
• Enables sorting Safari bookmarks by name or URL by right clicking and choosing ‘Sort By…’
• Fixes an issue that may prevent web link previews from appearing in Messages
• Helps protect privacy by only AutoFilling usernames and passwords after selecting them in a web form field in Safari
• Displays warnings in the Safari Smart Search Field when interacting with password or credit card forms on non-encrypted web pages
• Displays privacy icons and links to explain how your data will be used and protected when Apple features ask to use your personal information